Table 1. Patients characteristics.
| Case No. | Age | Sex | HK Gr. | Approach | Location of an. | Dome (mm) | Neck (mm) | Narrowest mother vessel diameter (mm) | Direction of the clip | Clip | Clip blade length (mm) | Clip shape | SAH amount | Angiographic vasospasm on POD 7 | Symptomatic vasospasm on POD 7 | Mother vessel visibility in SILENT MRA (MIP) | Mother vessel visibility in SILENT MRA (VR) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 58 | W | 2 | F | Lt. ACD | 12.00 | 4.70 | 0.67 | Parallel | FT722T, FT760T | 6.6, 11.0 | Curved, straight | - | - | - | + | + | |
| 2 | 67 | W | 3 | F | Lt. ACD | 5.00 | 1.76 | 0.80 | Perpendicular | FT602T, FT750T | 7.8, 9.0 | Fenestrated & curved, straight | - | - | - | + | + | |
| 3 | 46 | M | 2 | F | ACoA | 4.46 | 1.79 | 1.82 | Perpendicular | FT720T | 7.0 | Straight | ++ | - | - | - | - | |
| 4 | 49 | W | 2 | F | ACoA | 2.40 | 2.44 | 1.61 | Perpendicular | FT700T | 3.0 | Straight | - | - | - | - | - | |
| 5 | 71 | W | 2 | F | ACoA | 5.75 | 4.77 | 1.00 | Perpendicular | FT752T | 8.3 | Curved | + | - | - | + | + | |
| 6 | 76 | W | 2 | F | ACoA | 3.58 | 2.04 | 1.14 | Perpendicular | FT728D | 7.0 | Bayonet | - | - | - | + | + | |
| 7 | 81 | W | 2 | P (left) | ACoA | 4.00 | 3.00 | 1.89 | Parallel | FT752T | 8.3 | Curved | - | + | + | + | + | |
| 8 | 70 | W | 1 | P | Rt. IC-PC | 3.50 | 3.50 | 0.80 | Parallel | FT728D, FT700T | 7.0, 3.0 | Bayonet, straight | - | - | - | + | + | |
| 9 | 76 | W | 2 | P | Lt. IC-PC | 7.00 | 2.87 | 1.48 | Parallel | FT752T | 8.3 | Curved | + | + | - | + | + | |
| 10 | 51 | W | 3 | P | Lt. MCA | 6.48 | 3.43 | 1.70 | Parallel | FT750T | 9.0 | Straight | ++ | - | - | + | + | |
| 11 | 65 | M | 2 | P | Lt. MCA | 3.10 | 2.47 | 0.49 | Parallel | FT762T | 10.2 | Curved | - | + | + | + | + | |
| 12 | 69 | W | 3 | P | Lt. MCA | 6.94 | 4.84 | 0.71 | Parallel | FT782T | 13.7 | Curved | - | - | - | + | + | |
| 13 | 70 | W | unrup. | P | Lt. MCA | 6.69 | 2.75 | 1.03 | Perpendicular | FT740T, FT750T | 7.0, 9.0 | Straight, straight | - | - | - | + | + | |
| 14 | 71 | W | unrup. | P | Lt. MCA | 9.52 | 1.38 | 0.80 | Parallel | FT750T | 9.0 | Straight | - | - | - | + | + | |
| 15 | 75 | W | 2 | P | Lt. MCA | 1.30 | 1.52 | 1.40 | Perpendicular | FT722T | 6.6 | Curved | + | - | - | - | - | |
| 16 | 75 | W | unrup. | P | Rt. MCA | 5.46 | 2.00 | 2.03 | Parallel | FT750T | 9.0 | Straight | - | - | - | + | + | |
| 17 | 82 | M | unrup. | P | Rt. MCA | 5.91 | 4.88 | 1.50 | Parallel | FT750T, FT760T | 9.0, 11.0 | Straight, straight | - | - | - | + | + | |
| 18 | 83 | W | 4 | P | Rt. MCA | 6.64 | 3.44 | 2.00 | Parallel | FT782T | 13.7 | Curved | ++ | + | - | + | + | |
| 19 | 84 | M | unrup. | P | Rt. MCA | 5.20 | 2.10 | 1.60 | Perpendicular | FT782T | 13.7 | Curved | - | - | - | + | + | |
| Median (range) | 71 (46-84) | 15 Women/ 4 Men | 5 unruptured, 14 ruptured | 6 bifrontal, 13 pterional | 5 ACoA, 2 ACD, 10 MCA, 2 IC-PC |
5.46 (1.30-12.00) | 2.75 (1.38-4.88) | 1.40 (0.49-2.03) | 11 parallel, 8 perpendicular | 14 single, 5 double | 9.0 (3.0-13.7) | 3 moderate, 3 massive | 4 angiographic vasospasm | 2 symptomatic vasospasm | 16 visible (84%) | 16 visible (84%) |
ACoA: anterior communicating artery, ACD: distal anterior cerebral artery, F: bifrontal approach, HK Gr.: Hunt and Kosnik grade, IC-PC: internal carotid-posterior communicating artery, MCA: middle cerebral artery, MIP: maximum intensity projection, P: pterional approach, POD: postoperative day, SAH: subarachnoid hemorrhage, unrup.: unruptured aneurysm, VR: volume rendering.